Wrench



(No Model.)

T. WHE ATLEY. WRENCH.

No. 520,099. Patented May 22, 1894.

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UNITED STATES PATENT ()FFICE.

THOMAS \VHEATLEY, OF SYRACUSE, NEW YORK.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 520,099, dated May 22, 1894.

Pplication filed April 17,1393, Serial Noni'lOfiBl- (No model.)

To all whom it may concern.-

Be it knownthat I, THOMAS WHEATLEY, of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Wrenches, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

My invention relates to improvements in wrenches, and has for its object the production of a simple device, which is economically manufactured, is durable and strong in use, and s of such construction that its jaws are readily separated, and are quickly and effectively clamped against the interposed article; and to this end it consists, in the detail construction and arrangement of the parts, all as hereinafter more particularly described and pointed out in the claim.

In describing this invention, reference is had to the accompanying drawings, forming a part of this specification, in which like letters indicate corresponding parts in all the views.

Figure 1' is an elevation of my improved wrench, itsjaws being illustrated as separated to their extreme limit. Fig. 2 is a longitudinal sectional view of my improved wrench, its aws being shown as clamped upon the interposed pipe. Fig. 3 is a transverse sectional view, taken on line -33-,Fig. 1, and Fig.

4 is a detail sectional view taken on line One of the wrench jaws A- is provided wlth faces ct-ameeting each other at an angle, and is formed with a shank a having the outer extremity of its inner edge provlded with engaging projections or teeth a -w The other wrench jaw -B--- is pro vided with faces b-balso meeting each other at an angle, and is preferably removably secured by a pin b' to one side of one end of a frame O. The other end of said frame is formed with a transverse guide cfor receiving the shank a', and at one side of said guide is a roller D- bearing against the smooth outer face of the shank --a'---- for facilitating its movement.

The side of the frame -*O- opposite the jaw B, is formed with an ear -;C- and pivoted by a pin eto said ear is a lever -E- having a segment e'- formed with a' series of engaging teeth or projections e correspondingin number with the teeth a on the shank, which teeth a are arranged in a plane concentric with the pivotal pin -e of the lever E and mesh with the teeth a The lever E stands normally at an acute angle with the length of the frame C and extends considerably beyond the end of the shank a', and consequently when desired to separate the jaws AB- the operator grasps the outer end of the lever E-, and holds it in a substantially horizontal plane, whereupon the frame -O- automatically swings upon the pivot eto its position shown at Fig. 1, so thatthe longitudinal lines of the lever E- and the frame C- are disposed at an acute angle or at some angle with each other less than a right angle. During this movement of theframe -O- the shank a'- of the jaw --A- moves lengthwisely through its guide c, and the jaw A- is separated from the jaw B- until the end of the shank a encounters an intermediary portion of the lever E--, here illustrated at Fig. 1 as that portion of the lever E- immediately adjacent to the tooth e-- nearest to the free end of the lever E. After being separated, as described, the wrench is engaged with the article, as a pipe -F-, to be engaged thereby by placing the wrench in such position that the jaws -AB- are on opposite sides thereof, and by then rocking the lever E- in the opposite direction, and thereby drawing the jaw -A toward the jaw -B'-. If it is desired to turn the pipe in the other direction, the wrench will obviously be applied to the pipe from the other side after which the above operation is gone through with.

It will be apparent to one skilled in the art that this wrench is readily manufactured, and, as its jaws are quickly and automatically separated and are readily and eifectively clamped against the article to be engaged thereby, the wrench is extremely efficient and In a wrench, the combination with a frame having a transverse guide across one end, a jaw removably connected with one side of its other end, the opposite side of the frame at this end having a projecting ear, and alever pivoted to said ear and having a toothed segment around its pivot; of a movable jaw provided with a shank adapted to slide longitudinally in said guide, a roller in the frame at that side of the guide which is remote from said pivot pin, against which roller one edge of said shank slides, and teeth on the opposite edge of the shank intermeshing with those on the segment whereby the shank is moved to separate the jaws when the lever is THOMAS WHEATLEY.

Witnesses:

CLARK H. NORTON, E. A. WEISBURG. 

